Bushing remover



Jul 8 1924. 1,500,422

J. K. ROBINSON BUSHING REMOVER Filed Dec. '2, 1922 J yHZ.

a m uemtoz Patented July 8, 1924.

UNITED STATES PATENT OFFICE.

JAMES K. ROBINSON, 0F J ACKSONYILLE, FLORIDAyASVSIGNOR OF ONE-FOURTH TO S. S. RICKETT AND ONE-FOURTH TO'G. G. ROBERTfiON, BOTH 0F JACKSQNVILLIL'YFLORID'A.

BUSHING REMOV'ER.

Application filed December 7, 1922. Serial No. 605,456.

1 0 all whom it may concern:

Be it known that 1, JAMES K. ROBINSON, a citizen of the United States, residing at Jacksonville, in the county of Dnval and State of Florida, have invented a new and useful Bushing Remover, of which the following is a specification.

This invention aims to provide a simple but eflicient means whereby a bushing may be driven or forced out of the bearing of a connecting rod, and a new bushing be placed in the bearing without springing or distorting the connecting rod.

It is within the province of the disclosure to improve generally and to enhance :the utility of devices of that type to which the invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings Figur 1 shows in elevation, a device constructed in accordance with the invention, assembled with a connecting rod, the parts being in the positions which they will assume before the old bushing has been driven out of the bearing of the connecting rod; Figure 2 is a longitudinal section wherein parts appear in elevation, the view depicting the device. as it will appear after the old bushing has been driven out of the bearing of the connecting rod; Figure 3 is a cross section on the line 3-3 Of Figure 2; and Figure 4 is a frag-mental elevation showing a portion of the spring.

In carrying out the invention, there is pro vided a tubular casing 1, open atone end,

' and provided at the other extremity with an end wall 2 having a small opening 3. An annular follower 4 is mounted closely but slidably in the casing 1. A compression spring 5 is interposed between the end wall 2 of the casing 1 and the follower 4 and serves to move the follower outwardly. The inner convolution 6 of the spring 5 may be made somewhat larger than the other convolutions of the spring, so that when the inner I convolution 6 is compressed, and then is permitted to expand, within the-casing 1, the said inner convolution 6 will hold the spring in the casing, the other convolutions of the spring being freely slida'ble in the casing. The outer terminal convolution of the-spring 5 has an arm 7, mounted in the annular follower 4. The numeral 8 designates a plunger of such diameter asto fit closely but slidably in'the follower 4, the plunger being provided with a head 9.

The numeral 10 designates a connecting rod, having a bearing 11. The numeral "1 2 denotes an old bushing, which, when the parts are arranged as shown in Figure 1, is held in the bearing 11 of the connecting rod 10. At 14 ther appears a new bushing which is adapted to replace the old bushing 12 in the bearing 11 of the connecting rod.

l/Vhen the parts are arranged as shownin Figure 1, thenewbushing 14 is placed on the plunger 8 in abutment with the head '9 of the plunger, the plungerbeing extended throughthe old bushing 1 2,'which,' 'at thijs time, is still in the'bearing' '11 of the connecting rod. The follower '4 is advanced by the spring 5 until the follower is located at a point adjacent to the open end of the casing 1, the extremity of the plunger 8 being received within the follower 4.

Assuming that the parts are arranged as above set forth, and as shown in Figure 1, the casing 1 and the head 9 of the plunger 8 may be interposed between the jaws of a vise, and, when the jaws of the vise are moved toward each other, the new bushing '14 will crowd the old bushing 12 out of the bearing 11 and into the casing 1, the new bushing 14 replacing the old bushing 12 in the bearing 11, as shown in Figure 2. Then the old bushing 12 enters the casing 1, the follower 4 is crowded backwardly and the sprin 5 is compressed. When the casing 1 is removed from the plunger 8, the spring 5 will advance the follower 4 and eject the old bushing 12 from the casing 1. The spring 5 serves not only as a means for advancing the follower 4, but, as well, serves to hold the follower in the casing, since the terminal convolution 6 of the spring is engaged within the casing. The opening 3 permits a lubricant to be introduced within the casing 1 and serves, also as a vent, permitting the exit of air when the parts assume the positions depicted in Figure 2 of the drawings. Although it has been stated that the device maybe manipulated through the instrumentality of a vise, theplunger 8 may be advanced into the position shown in Figure 2, in any other suitable way.

What is claimed is v t 1. A device for use in forcing an old bushing out of an opening in an articlethrough the instrumentality of a new bushing and for mounting the new bushing in the opening, the device comprising a plunger of sufficient length to pass through the new bushing and enter the old bushing whilst the old. bushingis in the opening and when the bushings are in end-to-end abutment, thereby to guide the new bushing into the opening, the plunger having a head of such size as to engage the new bushing and advance both bushings, and a tubular casing adapted to abut at one end against the article and to serve as a support for the article when the bushings are advanced, the czfsing being small enough in internal diameter so that it can be placed in abutment with the article, as aforesaid, and being large enough in internal diameter to receive the old bushing without much transverse movement, when the old bushing is advanced, whereby the old bushing will hold the casing against transverse movement, in abutting engagement with the article.

2. A device for re-bushing an article, comprising a plunger; a follower loosely sur rounding the plunger; and a casing independent of the article to'beire-bushed and of sufficient'diameter and construction to ricleive the plunger and the follower slida y. V, i.

3. A device of the classdescribed comprising a casing; a follower slidable in the casing; a compression spring within the casing and cooperating with the follower to advance the follower; and a plunger slidable in the follower and supplied at its outer end with a head,

4. The combination with a member having a bushing, of a plunger mounted for reciprocation in the bushing and having a head at one end; a second bushing surrounding the plunger and interposed between the head and the first specified bushing; a casing abutting against said member and of sufficient diameter to receive the first specified bushing; a follower in the casing and receiving the lunger, the follower cooperating with the first specified bushing when the same is received in the casing; and spring means within the casing for advancing the follower.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES K. ROBINSON. Witnesses C. S. ROBERTSON, R, L, JANES. 

